1 #!/bin/sh 2 # SPDX-License-Identifier: GPL-2.0-or-later 3 # Copyright (c) 2016-2018 Oracle and/or its affiliates. 4 # 5 # Author: Alexey Kodanev <alexey.kodanev (at] oracle.com> 6 7 TST_TEST_DATA="udp udp_lite" 8 9 . busy_poll_lib.sh 10 11 cleanup() 12 { 13 [ -n "$busy_poll_old" ] && \ 14 sysctl -q -w net.core.busy_poll=$busy_poll_old 15 [ -n "$rbusy_poll_old" ] && \ 16 tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old" 17 } 18 19 set_busy_poll() 20 { 21 local value=${1:-"0"} 22 ROD_SILENT sysctl -q -w net.core.busy_poll=$value 23 tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value" 24 } 25 26 setup() 27 { 28 busy_poll_check_config 29 30 busy_poll_old="$(cat /proc/sys/net/core/busy_poll)" 31 rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll') 32 } 33 34 test() 35 { 36 for x in 50 0; do 37 tst_res TINFO "set low latency busy poll to $x per $2 socket" 38 set_busy_poll $x 39 tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x \ 40 -b $x -T $2 41 done 42 43 local poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) )) 44 45 if [ "$poll_cmp" -lt 1 ]; then 46 tst_res TFAIL "busy poll result is '$poll_cmp' %" 47 else 48 tst_res TPASS "busy poll increased performance by '$poll_cmp' %" 49 fi 50 } 51 52 tst_run 53
